Energy » Circuit Breakers » Miniature Circuit Breakers (MCB)

Building Filters

313

Used Miniature Circuit Breakers (Mcb)

  • Siemens 5SY41 MCB A6 Circuit

    Siemens 5SY41 MCB A6 Circuit Breaker w/5ST3010AS Auxiliary Circuit. 4B-51

    • Manufacturer: Siemens

    Items are spares/engineering demo hookups that were pulled from an industrial working environment. We repair all types of industrial automation including AC Servo Drives, Servo Motors, Operator Interface Panels, ...

    $23 USD
    Duncan, SC
  • Trusted Seller
    HUBBELL BRYANT BR250 2POLE CIRCUIT

    HUBBELL BRYANT BR250 2POLE CIRCUIT BREAKER ($12.50 OBO)

    • Manufacturer: Bryant

    “USED, VERY GOOD CONDITION” BR250 MINIATURE CIRCUIT BREAKER TYPE BR 50 AMP 2 POLE 120/240 VAC ***Local deliveries available, simply message us before purchasing so we can properly adjust the listing for you. Plea...

    $13 USD
    Waukesha, WI
  • Trusted Seller
    Eaton FAZ-D2/3-NA Circuit Breaker 2A,

    Eaton FAZ-D2/3-NA Circuit Breaker 2A, 3 Pole

    • Manufacturer: Eaton

    PLEASE REVIEW: We would ask that potential buyers please view the photographs carefully, and understand what you are buying. All questions should be submitted prior to your purchase. *Your purchase includes a 30 ...

    $45 USD
    Suwanee, GA
  • Trusted Seller
    Eaton FAZ-C10/3-NA Miniature Circuit Breaker,

    Eaton FAZ-C10/3-NA Miniature Circuit Breaker, 10 Amp, 3 Pole

    • Manufacturer: Eaton

    PLEASE REVIEW: We would ask that potential buyers please view the photographs carefully, and understand what you are buying. All questions should be submitted PRIOR to auction close. Your purchase includes a 30 d...

    $65 USD
    Suwanee, GA
  • Trusted Seller
    ABB SU 201M-C20 Circuit Breaker

    ABB SU 201M-C20 Circuit Breaker 20A *NEW*

    • Manufacturer: ABB

    PLEASE REVIEW: We would ask that potential buyers please view the photographs carefully, and understand what you are buying. All questions should be submitted prior to your purchase. *Your purchase includes a 30 ...

    $35 USD
    Suwanee, GA
  • Trusted Seller
    ABB SU 201M-C20 Circuit Breaker

    ABB SU 201M-C20 Circuit Breaker 20A *NEW*

    • Manufacturer: ABB

    PLEASE REVIEW: We would ask that potential buyers please view the photographs carefully, and understand what you are buying. All questions should be submitted prior to your purchase. *Your purchase includes a 30 ...

    $40 USD
    Suwanee, GA
  • Siemens 5SY4350-5 MCB A50 Circuit

    Siemens 5SY4350-5 MCB A50 Circuit Breaker. 4B-51

    • Manufacturer: Siemens

    Items are spares/engineering demo hookups that were pulled from an industrial working environment. We repair all types of industrial automation including AC Servo Drives, Servo Motors, Operator Interface Panels, ...

    $45 USD
    Duncan, SC
  • Siemens 5SY4302-7 Miniature Circuit Breaker,

    Siemens 5SY4302-7 Miniature Circuit Breaker, 400V. 4D-48

    • Manufacturer: Siemens

    Items are spares/engineering demo hookups that were pulled from an industrial working environment. We repair all types of industrial automation including AC Servo Drives, Servo Motors, Operator Interface Panels, ...

    $59 USD
    Duncan, SC
  • Siemens 5SY4330-7 Miniature Circuit Breaker,

    Siemens 5SY4330-7 Miniature Circuit Breaker, 400V. 4D-48

    • Manufacturer: Siemens

    Items are spares/engineering demo hookups that were pulled from an industrial working environment. We repair all types of industrial automation including AC Servo Drives, Servo Motors, Operator Interface Panels, ...

    $178 USD
    Duncan, SC
  • Trusted Seller
    Cutler-Hammer WMS2C60 Miniature Circuit Breaker,

    Cutler-Hammer WMS2C60 Miniature Circuit Breaker, 2-Pole, 60A, 415V

    • Manufacturer: Cutler-Hammer

    PLEASE REVIEW: We would ask that potential buyers please view the photographs carefully, and understand what you are buying. All questions should be submitted PRIOR to making your purchase. *Your purchase include...

    $25 USD
    Suwanee, GA
  • Trusted Seller
    ABB ST201M-K2 Single Pole Circuit

    ABB ST201M-K2 Single Pole Circuit Breaker, Qty 10 *NEW*

    • Manufacturer: ABB

    PLEASE REVIEW: We would ask that potential buyers please view the photographs carefully, and understand what you are buying. All questions should be submitted prior to your purchase. *Your purchase includes a 30 ...

    $220 USD
    Suwanee, GA
  • Siemens 5SY4106-7 MCB C6 Miniature

    Siemens 5SY4106-7 MCB C6 Miniature Circuit Breaker. 4D-47

    • Manufacturer: Siemens

    Items are spares/engineering demo hookups that were pulled from an industrial working environment. We repair all types of industrial automation including AC Servo Drives, Servo Motors, Operator Interface Panels, ...

    $27 USD
    Duncan, SC
  • Trusted Seller
    Allen Bradley 1492-SPM1B030 Ser D

    Allen Bradley 1492-SPM1B030 Ser D Miniature Circuit Breaker *NEW*

    • Manufacturer: ABB

    PLEASE REVIEW: We would ask that potential buyers please view the photographs carefully, and understand what you are buying. All questions should be submitted prior to your purchase. *Your purchase includes a 30 ...

    $30 USD
    Suwanee, GA
  • SIEMENS 5SY4 308-7 Miniature Circuit

    SIEMENS 5SY4 308-7 Miniature Circuit Breaker, 400V. 4D-48

    • Manufacturer: Siemens

    Items are spares/engineering demo hookups that were pulled from an industrial working environment. We repair all types of industrial automation including AC Servo Drives, Servo Motors, Operator Interface Panels, ...

    $68 USD
    Duncan, SC
  • Trusted Seller
    ABB SU 201M C20A 20A

    ABB SU 201M C20A 20A Circuit Breaker Single Pole *NEW*

    • Manufacturer: ABB

    PLEASE REVIEW: We would ask that potential buyers please view the photographs carefully, and understand what you are buying. All questions should be submitted prior to your purchase. *Your purchase includes a 30 ...

    $30 USD
    Suwanee, GA
23456

Overview

Circuit breakers are essential safety devices that protect electrical circuits from damage caused by overloads or short circuits. They automatically interrupt the flow of electricity when a fault is detected, preventing potential fires and equipment damage. Circuit breakers are used in residential, commercial, and industrial settings to ensure electrical safety and reliability.

FAQ

What should I consider when buying a used circuit breaker?

Check the breaker’s amperage rating, compatibility with your electrical system, and overall condition. Ensure it has been tested and certified for safety.

How do I ensure the circuit breaker is shipped safely to my location?

Use a transport service that specializes in delicate electrical components. Ensure the breaker is well-packaged and cushioned to prevent damage during transit.

What is the maintenance schedule for a circuit breaker?

Regular maintenance includes visual inspections for signs of wear or damage, testing for proper operation, and cleaning any dust or debris from the breaker. Consult the manufacturer’s manual for detailed maintenance intervals.